Display apparatus

• US 10,680,201 B2
• Filed: 08/15/2017
• Issued: 06/09/2020
• Est. Priority Date: 06/13/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Keun-Soo, Park, Yong-Hwan, An, Chi-Wook, Lee, Seong-Jun
• Primary Examiner(s): Chang, Jay C
• Assistant Examiner(s): Liu, Mikka
• Application Number:
  US15/677,653
• Publication Number:
  US 20180026230A1
• Time in Patent Office: 1,029 Days
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/873 Encapsulations
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A display apparatus includes: a substrate; a display unit disposed on the substrate; a barrier unit disposed between the substrate and the display unit; and a buffer unit disposed between the barrier unit and the display unit, wherein a sum of a thickness of the barrier unit and a thickness of the buffer unit is in the range from 0.9 μm to 3 μm.

Claims

1. A display apparatus comprising:

a substrate;

a display unit disposed on the substrate;

a barrier unit disposed between the substrate and the display unit; and

a buffer unit disposed between the barrier unit and the display unit,

wherein the display unit is disposed on the buffer unit,

wherein a sum of a thickness of the barrier unit and a thickness of the buffer unit is in a range from 0.9 μ

m to 3 μ

m, and

wherein the buffer unit has a structure in which an oxide material and a nitride material are stacked,

wherein the thickness of the barrier unit is greater than the thickness of the buffer unit.

2. The display apparatus of claim 1, wherein the substrate comprises polyimide, polyethylene naphthalate, polyethylene terephthalate (PET), polyarylate, polycarbonate, polyetherimide (PEI), or polyethersulfone.

3. The display apparatus of claim 1, wherein the barrier unit has a structure in which an oxide material and a nitride material are stacked.

4. The display apparatus of claim 1, wherein the buffer unit comprises a first layer comprising silicon nitride,

wherein the barrier unit comprises a second layer comprising silicon nitride, and

wherein the first layer directly contacts the second layer.

5. The display apparatus of claim 1, further comprising a protective layer on a surface of the substrate opposite a surface of the substrate facing the barrier unit.

6. The display apparatus of claim 1, wherein the display unit comprises an organic light emitting device.

7. The display apparatus of claim 1,

wherein the barrier unit comprises:

a first barrier layer comprising silicon oxide; and

a second barrier layer comprising silicon nitride,

wherein the buffer unit comprises;

a first buffer layer comprising silicon nitride; and

a second buffer layer comprising silicon oxide,

wherein the second barrier layer is thicker than the first buffer layer, and

wherein the first barrier layer is thicker than the second buffer layer.